Squares have four congruent sides and four angles that measure 45 degrees. true false

Ihonestly have no clue if it's each or none.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

8.74 rounded to the nearest whole number